Optode sensor with integrated reference

    公开(公告)号:US09696259B2

    公开(公告)日:2017-07-04

    申请号:US14829355

    申请日:2015-08-18

    Abstract: A system for obtaining a measurement of a species of interest. The system includes one or more reference regions, a sensor region, an exciter unit, a detector unit and a processing unit. The exciter unit exposes first and second chemical transducers in the reference and sensor regions, respectively, to an excitation light while they are exposed to reference environments and an analyte, respectively. The detector unit measures responses of the first and the second chemical transducers to the excitation light. The processing unit determines a compensation for aging of the first chemical transducer from a discrepancy between the measurements of the responses of the first chemical transducer and reference responses. The processing unit applies the compensation for aging to the measurement of the response of the second chemical transducer to obtain the measurement of the species of interest in the analyte.

    Method for correcting a signal backscattered by a sample and associated device
    90.
    发明授权
    Method for correcting a signal backscattered by a sample and associated device 有权
    用于校正由样品和相关装置反向散射的信号的方法

    公开(公告)号:US09594024B2

    公开(公告)日:2017-03-14

    申请号:US15015325

    申请日:2016-02-04

    Abstract: The invention relates to a method for correcting an optical signal produced by a sample comprising the following steps: illuminating a surface of the sample by a first light beam, produced by a first light source, the said first light source being coupled to a first optical system, focusing the said first light beam in an object focal plane of the first optical system, the said object focal plane being situated, in the sample, at a measuring depth z from the surface of the sample; measuring, with a first photodetector, of a first optical signal backscattered by the sample in response to the first light beam, the first photodetector producing a first measured signal representative of the said first optical signal, a spatial filter being interposed between the first optical system and the first photodetector, the spatial filter comprising a window which transmits the said first optical signal towards the said first photodetector, the window being disposed in a conjugate focal plane of the object focal plane of the first optical system; wherein the method also comprises the following steps: determining an optical scattering property of the sample; applying a correction function to the first measured signal so as to generate a first corrected signal, the said correction function taking into account the said optical scattering property.

    Abstract translation: 本发明涉及一种用于校正由样品产生的光学信号的方法,包括以下步骤:通过由第一光源产生的第一光束照射样品的表面,所述第一光源耦合到第一光学 系统,将所述第一光束聚焦在第一光学系统的物体焦平面中,所述物体焦平面位于样品中,距离样品表面的测量深度z; 利用第一光电检测器响应于第一光束由样品反向散射的第一光信号,第一光电检测器产生表示所述第一光信号的第一测量信号,空间滤光器插入在第一光学系统 并且所述第一光电检测器包括将所述第一光信号朝向所述第一光电检测器传输的窗口,所述窗口设置在所述第一光学系统的物体焦平面的共轭焦平面中; 其中所述方法还包括以下步骤:确定所述样品的光学散射性质; 对第一测量信号应用校正函数,以产生第一校正信号,所述校正函数考虑所述光散射特性。

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